Download GTU B.Tech 2020 Winter 7th Sem 2172601 Rubber Equipment Design Ii Question Paper

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Subject Code: 2172601

GUJARAT TECHNOLOGICAL UNIVERSITY

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BE- SEMESTER-VII (NEW) EXAMINATION - WINTER 2020

Subject Name: Rubber Equipment Design-II

Time: 10:30 AM TO 12:30 PM

Instructions:

Attempt any FOUR questions out of EIGHT questions.

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Make suitable assumptions wherever necessary.

Figures to the right indicate full marks.

1. 1. Give the importance of Chrome plating. (MARKS 03)
   2. Write the properties required for Mold design. (MARKS 04)
   3. Explain the “Thermal consideration” of Transfer molding. (MARKS 07)

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2. 1. Write the importance of performer in compression molding. (MARKS 03)
   2. List out the different ejection system used in molding and explain any one. (MARKS 04)
   3. Draw the different design of overflow used in compression molding and discuss the advantages and disadvantages of each. (MARKS 07)

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3. 1. Which are the important aspects while designing the Die? (MARKS 03)
   2. Give the difference between Die and Mold. (MARKS 04)
   3. List out the different design of Die used according to flow of melt and explain each in detail. (MARKS 07)
4. 1. Which materials are used for die construction? (MARKS 03)

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   2. Give the function of Die and Explain the important aspects of die design. (MARKS 04)
   3. Explain the Die Geometry in detail. (MARKS 07)
5. 1. Give the difference of Hot feed and Cold feed Extruder with respect to Processing Factor. (MARKS 03)
   2. Draw the design of Co rotating and counter rotating twin screw. (MARKS 04)

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   3. Explain the action of Screw theory in detail. (MARKS 07)
6. 1. Write a brief note on Pin Type Extruder. (MARKS 03)
   2. Give the difference between Bimetallic liner and Induction Liner. (MARKS 04)
   3. Short note on “Iddon High Intensity Mixing Screw”. (MARKS 07)

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7. 1. Define the term (1) Sprue Bush (2) Shot capacity (3) Injection Unit. (MARKS 03)
   2. List out the Machine controls and process control variable and explain any one in brief. (MARKS 04)
   3. Discuss the variations in Injection Molding Techniques in detail. (MARKS 07)

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8. 1. How to calculate cycle time in injection molding? (MARKS 03)
   2. Which thing we have to keep in mind while designing space availability in injection mold? (MARKS 04)
   3. Explain in detail about the FIFO and FILO with respect to Injection molding. (MARKS 04)

Date: 19/01/2021

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Total Marks: 56

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